210121222111222 has 8 divisors (see below), whose sum is σ = 315182169850896. Its totient is φ = 105060498827592.

The previous prime is 210121222111219. The next prime is 210121222111231. The reversal of 210121222111222 is 222111222121012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 210121222111193 and 210121222111202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53753818 + ... + 57530125.

It is an arithmetic number, because the mean of its divisors is an integer number (39397771231362).

Almost surely, 2^{210121222111222} is an apocalyptic number.

210121222111222 is a deficient number, since it is larger than the sum of its proper divisors (105060947739674).

210121222111222 is a wasteful number, since it uses less digits than its factorization.

210121222111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112228022.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 210121222111222 its reverse (222111222121012), we get a palindrome (432232444232234).

The spelling of 210121222111222 in words is "two hundred ten trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twenty-two".